Pipe-coupling for pneumatic tools.



v UNITED STATES PATENT OFFICE.

HERMAN G. KOTTEN, OF ENGLEWOOD, NEW JERSEY, ASSIGNOR T0 THE KELLER TOOL COMPANY, OF PENNSYLVANIA.`

PN EUMATIC TOOLS.

SPECIFICATION forming part of Letters Patent No. 660,856, dated October 30, 1900.

To all whom it may concern:

Be it known that I, HERMAN G. KoTTEN, a citizen of the United States, residing at Englewood, in the county of Bergem` State of New Jersey, hav'e invented a new and useful Improvement in Pipe Couplings for Pneumatic Tools, which improvement is fully set forth in the following specication and accompanying drawings.

My invention relates to an improved construction of a pipe-coupling for pneumatic tools; and it consists of a novel means forenabling the fluid-supply pipe to be readily coupled t-o and uncoupled from the tool.

Figures l and 2 represent longitudinal sectional views of a pipe-coupling for pneu matic tools embodying my invention.V Fig. V3 represents a section on line .fr x, Fig. l. Fig. 4, represents an end elevation of the couplingsleeve. Fig. 5 represents a sectional view of the coupling-sleeve in detached position, the section being taken on line z e', Fig. 6. Fig. 6 represents a section on line y y, Fig. 5, viewed in the direction of the arrows. Fig. 7 represents asectional view of the inlet piece or plug having a portion thereof shown in elevation. Fig. 8 represents an end vieu7 of Fig. 7. Fig. 9 represents a sectional view of the hammer employed. Figs. l0 and 1l represent perspective views of another form of coupling device.

Similar characters of reference indicate corresponding parts in the figures.

Referring to the drawings, a designates a pneumatic tool having the casing b, which is provided at its inlet end with the threaded inlet piece or plug c, which has the body portion d, in which is contained the inlet-port e, with which communication is had by means of the opening in the neck f, the abutting faces of said cylinder and plug being serrated, as indicated at g, and the parts being held locked in the desired position by means of the spring-pressed latch or its equivalent h, which is manipulated from the exterior by the ing'er-piecej.

7c designates a coupling-sleeve which has at its outer portion the inwardly-extending lip orange Z, which has the openingm therein, through which passes the coupling-nipple n, the outer portion thereof being roughened sentito. 733,715. tno man.)

for engagement with a hose,'.(not shown,) while theinner portion thereof has the flange or abutment p, against which contacts an end of the coupling-spring q, the other end thereof abutting against the lippl, said spring being vlugs #which have the converging walls u,

which are adapted to engage si milarly-shaped seats/U at the inner end Vw of the sleeve lc, saidseats having the walls or abutments x,

which serve as stops and to limit the extent of rotation of the sleeve when the parts are assembled, it being" understood that the openings y permit said sleeve to be insertedin place on the neck f, after which said sleeve is turned until the lugs t strike the stops the coupling-spring holding the parts firmly in assembled position, while the portion z of the -coupling-nipple extends into the neck fand leakage is prevented by means ofthe washerr. In Figs. 10 and l1 I have shown another form of coupling device wherein the contacting portions of the coupling are provided with curved surfaces, as will be evident, the curved under portions 20 of the lugs 2l resting upon the curved seat 22 when the parts are asn 'sembled,vthe extent of rotation of the coupling-sections being limited by the shoulder in Fig. 10,) as will be apparent.

It will be apparent that slight changes may be made by those skilled in the art which will come within the scope of my invention; and I do not, therefore, desire to be limited in every instance to thev exact construction I have herein shown and described.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent,lis-

l. In a pipe-coupling for a pneumatic tool, an inlet-piece having an inlet-port therein for the motive fluid, a neck attached to saidpiece and having laterally-extending lugs thereon, a coupling-sleeve recessed and provided with means Ifor engaging said lugs, a couplingnipple, a washer interposed between said coupling-nipple and the outer surface of said which meets the curved portion 22, (best-seen IOO inletpiece :tnd at spring interposed between said sleeve end nipple.

2. In s pipecoupling for a pneumatic tool, the combination of en inlet-piece having a, port therein for the admission of the motive inid, a neck attached to said inlet-piece and provided with lugs having curved wells, it coupling-sleeve, openings in said sleeve for permitting theinsertion of said lugs, recesses or depressions upon seid sleeve for the reception of seid lugs, stops for limiting the movement of seid lugs, a coupling-nipple, a Hnge thereon, a washer interposed between said flange and inlet-piece, an inwardly-projectingl flange 011 said coupling-sleeve and a spring held between seid Hnge and couplingnipple.

3. In it pipe-coupling, an inlet-piece, a neck attached to said in let-piece and provided with Y )ieee lugs )ro'ectinr from said neck accu ling-sleeve engaging said lugs, a couplingnipplc and a spring interposed between seid sleeve and nipple.

HERMAN G. KOTTEN.'

Tit nesses:

FREDERIC G. CLAUER, JULIUS D. TOBIAs. 

